[ncl-talk] Taking the average of t2 for 3 wrfout files

[Dennis Shea]

Please see the addfiles documentation

  diri = "./"
  fili = (/ "FOO_1", "FOO_2.nc", "FOO_3.nc" /)

  pthi = diri+fili
  f   = addfiles(pthi, "r")

 T2 = f[:]->T2
  printVarSummary(T2)

  T2_avg = dim_avg_n_Wrap(T2, 0)
  printVarSummary(T2_avg)

;======
   http://www.ncl.ucar.edu/Document/Functions/Built-in/addfiles.shtml

Good luck

fa = addfile("d03_FEB_YSU_F.nc","r")
t2a = fa->T2
t2a_avg = dim_avg_n_Wrap(t2a, 0)
printVarSummary(t2a_avg)   ; south_north | ??] x [west_east | ??]

fb = addfile("d03_Feb_MYJ_f.nc","r")
t2b = fb->T2
t2b_avg = dim_avg_n_Wrap(t2b, 0)
printVarSummary(t2b_avg)   ; south_north |??] x [west_east | ??]


On Sat, Aug 6, 2016 at 10:13 AM, Jacob Alberto Garcia <
jacob_garcia at dlsu.edu.ph> wrote:

> Hello,
>
> I want to take the three files and find the time average of the 2 meter
> temperature. I have this script here that calculates the mean difference of
> T2 for the two files given below. What I want to do is instead of just one
> month, I'd like to Average three months for the YSU and three months for
> the MYJ simulations. What do I change in this script?
>
>
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
> ;load "./WRFUserARW.ncl"
>
> fa = addfile("d03_FEB_YSU_F.nc","r")
> t2a = fa->T2
> t2a_avg = dim_avg_n_Wrap(t2a, 0)
> printVarSummary(t2a_avg)   ; south_north | ??] x [west_east | ??]
>
> fb = addfile("d03_Feb_MYJ_f.nc","r")
> t2b = fb->T2
> t2b_avg = dim_avg_n_Wrap(t2b, 0)
> printVarSummary(t2b_avg)   ; south_north |??] x [west_east | ??]
>
> t2_diff = t2a_avg-t2b_avg
> copy_VarMeta(t2a_avg, t2_diff)
> t2_diff at long_name = "T2 Difference"
> t2_diff at units = t2a at units
> printVarSummary(t2_diff)     ; south_north |??] x [west_east | ??]
>
> ; We generate plots, but what kind do we prefer?
>   type = "pdf"
> ; type = "pdf"
> ; type = "ps"
> ; type = "ncgm"
>
> wks = gsn_open_wks(type,"plot_DIFF_d03_FEB")
>   gsn_define_colormap(wks,"BlueDarkRed18")
>
>
>
>   pltres = True
>   mpres = True
>   res = True
>   mpres at mpDataBaseVersion = "HighRes"
>   res at MainTitle                   = "2 meter temperature Difference"
>   mpres at mpGridAndLimbOn = False
>   res at gsnMaximize = True
>   res at cnFillOn = True
>   res at gsnSpreadColors = True
>   res at cnLinesOn = False
>   res at cnLineLabelsOn = False
>   mpres at mpGeophysicalLineColor = "Black"
>
>
>
>
>   plot    = gsn_csm_contour_map(wks,t2_diff,res)
>
>      contour_DIFF = wrf_contour(fa,wks,t2_diff,res)
>
>      plot = wrf_map_overlays(fa,wks,(/contour_DIFF/),pltres,mpres)
>
> ===========================================================
>
> Would something like this work?
>
>
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
> ;load "./WRFUserARW.ncl"
>
> fa = addfile("d03_DEC_YSU_F.nc","r")
> faa=addfile("d03_JAN_YSU_F.nc",r)
> faaa=addfile('d03_FEB_YSU_F.nc",r)
> t2a = fa->T2
> t2aa = faa->T2
> t2aaa = faaa-> T2
> t2a_avg = dim_avg_n_Wrap(t2a, t2aa, t2aaa, 0)
> printVarSummary(t2a_avg)   ; south_north | ??] x [west_east | ??]
>
> fb = addfile("d03_Dec_MYJ_f.nc","r")
> fbb = addfile("d03_Jan_MYJ_f.nc","r")
> fbbb = addfile("d03_Feb_MYJ_f.nc","r")
> t2b = fb->T2
> t2bb = fbb->T2
> t2bbb = fbbb ->T2
> t2b_avg = dim_avg_n_Wrap(t2b, t2bb, t2bbb, 0)
> printVarSummary(t2b_avg)   ; south_north |??] x [west_east | ??]
>
> t2_diff = t2a_avg-t2b_avg
> copy_VarMeta(t2a_avg, t2_diff)
> t2_diff at long_name = "T2 Difference"
> t2_diff at units = t2a at units
> printVarSummary(t2_diff)     ; south_north |??] x [west_east | ??]
>
> ; We generate plots, but what kind do we prefer?
>   type = "pdf"
> ; type = "pdf"
> ; type = "ps"
> ; type = "ncgm"
>
> wks = gsn_open_wks(type,"plot_DIFF_d03_FEB")
>   gsn_define_colormap(wks,"BlueDarkRed18")
>
>
>
>   pltres = True
>   mpres = True
>   res = True
>   mpres at mpDataBaseVersion = "HighRes"
>   res at MainTitle                   = "2 meter temperature Difference"
>   mpres at mpGridAndLimbOn = False
>   res at gsnMaximize = True
>   res at cnFillOn = True
>   res at gsnSpreadColors = True
>   res at cnLinesOn = False
>   res at cnLineLabelsOn = False
>   mpres at mpGeophysicalLineColor = "Black"
>
>
>
>
>   plot    = gsn_csm_contour_map(wks,t2_diff,res)
>
>      contour_DIFF = wrf_contour(fa,wks,t2_diff,res)
>
>      plot = wrf_map_overlays(fa,wks,(/contour_DIFF/),pltres,mpres)
>
>
>
>
>
>
>
>
>
>
>
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>
>
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